
5: VIRTUAL DISPLAYS
2-20
EPSON
S1D13806 SERIES PROGRAMMING NOTES
AND EXAMPLES (X28B-G-003-01)
5.2.1 Registers
The Display Start Address registers form the word address to the display buffer where the LCD or
CRT/TV starts displaying from. An address of 0 points to the beginning of the display buffer.
Changing the start address registers by one pans from 1 to 4 pixels depending on the current color
depth. The following table lists the maximum number of pixels affected by a change of one to these
registers.
REG[042h] LCD Display Start Address Register 0
LCD Display
Start Address
Bit 7
LCD Display
Start Address
Bit 6
LCD Display
Start Address
Bit 5
LCD Display
Start Address
Bit 4
LCD Display
Start Address
Bit 3
LCD Display
Start Address
Bit 2
LCD Display
Start Address
Bit 1
LCD Display
Start Address
Bit 0
REG[043h] LCD Display Start Address Register 1
LCD Display
Start Address
Bit 15
LCD Display
Start Address
Bit 14
LCD Display
Start Address
Bit 13
LCD Display
Start Address
Bit 12
LCD Display
Start Address
Bit 11
LCD Display
Start Address
Bit 10
LCD Display
Start Address
Bit 9
LCD Display
Start Address
Bit 8
REG[044h] LCD Display Start Address Register 2
n/a
LCD Display
Start Address
Bit 19
LCD Display
Start Address
Bit 18
LCD Display
Start Address
Bit 17
LCD Display
Start Address
Bit 16
REG[062h] CRT/TV Display Start Address Register 0
CRT/TV
Display Start
Address
Bit 7
CRT/TV
Display Start
Address
Bit 6
CRT/TV
Display Start
Address
Bit 5
CRT/TV
Display Start
Address
Bit 4
CRT/TV
Display Start
Address
Bit 3
CRT/TV
Display Start
Address
Bit 2
CRT/TV
Display Start
Address
Bit 1
CRT/TV
Display Start
Address
Bit 0
REG[063h] CRT/TV Display Start Address Register 1
CRT/TV
Display Start
Address
Bit 15
CRT/TV
Display Start
Address
Bit 14
CRT/TV
Display Start
Address
Bit 13
CRT/TV
Display Start
Address
Bit 12
CRT/TV
Display Start
Address
Bit 11
CRT/TV
Display Start
Address
Bit 10
CRT/TV
Display Start
Address
Bit 9
CRT/TV
Display Start
Address
Bit 8
REG[064h] CRT/TV Display Start Address Register 2
n/a
CRT/TV
Display Start
Address
Bit 19
CRT/TV
Display Start
Address
Bit 18
CRT/TV
Display Start
Address
Bit 17
CRT/TV
Display Start
Address
Bit 16
Table 5-1 Number of Pixels Panned When Start Address Changed By 1
Color Depth (bpp)
Pixels per Word
Number of Pixels Panned
44
4
82
2
16
1